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optic cup
optic disk
optic nerve
optic vesicle
optical
optical activity
optical art
optical brightener
optical character reader
optical character recognition
optical computer
optical disk
optical double star
optical fiber
optical glass
optical illusion
optical isomerism
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opt.
opt.


abbr 
Definition:
 
1. grammar optative
2. optics optical
3. ophthalmology optician
4. optics optics
5. optimum
6. optional
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